package com.shuang.tree17;

public class Node {

    int val;

    Node left;

    Node right;

    Node next;

    public Node(){}

    public Node(int val){
        this.val = val;
    }

    public Node(int val, Node left, Node right, Node next){
        this.val = val;
        this.left = left;
        this.right = right;
        this.next = next;
    }

}
